public ArithmeticSet Difference(ArithmeticSet other)
{
List <IntPrimitive> list = new List <IntPrimitive>(set);
List <IntPrimitive> otherList = new List <IntPrimitive>(other.set);
for (int i = 0; i < list.Count; i++)
{
if (otherList.Contains(list[i]))
{
list.RemoveAt(i);
i--;
}
}
return(new ArithmeticSet(list.ToArray()));
}
public ArithmeticSet Intersection(ArithmeticSet other)
{
List <IntPrimitive> list = new List <IntPrimitive>(set);
List <IntPrimitive> otherList = new List <IntPrimitive>(other.set);
List <IntPrimitive> ret = new List <IntPrimitive>(this.Union(other).set);
for (int i = 0; i < ret.Count; i++)
{
var item = ret[i];
if (!list.Contains(item) || !otherList.Contains(item))
{
ret.RemoveAt(i);
i--;
}
}
return(new ArithmeticSet(ret.ToArray()));
}
public ArithmeticSet Union(ArithmeticSet other)
{
if (set.Length == 0)
{
return(other);
}
if (other.set.Length == 0)
{
return(this);
}
IntPrimitive[] newSet = new IntPrimitive[set.Length + other.set.Length];
Array.Copy(set, 0, newSet, 0, set.Length);
Array.Copy(other.set, 0, newSet, set.Length, other.set.Length);
newSet = ResolveSet(newSet);
return(new ArithmeticSet(newSet));
}
public bool IsDisjoint(ArithmeticSet other) => this.Intersection(other).set.Length == EmptySet.set.Length;